In dragonfable, the rarest element is called 'good'. It is represented with an angel's wing. There are only 2 characters which have this element. one is the heart elemental, the other is warlic (when you play as him only). Both are in nythera saga. when you play as warlic and fight the elemental avatars, you will have the element good. there is no weapon for this element.
In the earth Astatine is rarest naturally occurring element, less than 30 grams for entire crust.
Painite
The rarest element in the world is astatine, and it costs $1 billion per troy ounce.
Astatine
Xenon is the rarest gas element in the earth's atmosphere. It represents 90 parts-per-billion of the total atmosphere.
electric/energy There is no most powerful element in DragonFable.
The second rarest element on Earth is unstable so it does not have a long life (22min.), but uranium is the rarest natural element and is the second heavist natural element. Actually, there are even rarer elements that last for less then fractions of a second. Some are so rare that they haven't even been discovered.
Element, because it is the rarest
The rarest naturally occurring element is astatine (At), with an estimate of only 25 grams in the earths crust. The rarest man-made element is francium, which has a half life of only 20 minutes, and must be constantly produced in order to be studied.
There isn't really a rarest one - They're all pretty rare! That's why all of them are really expensive. -Kатнячп•Fυııэя
the element plan b dark-star and flip to be exact
This gas is ozone: under 7.10e-6 %.